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MDCAT
Physics
2022

Physics · Heat and Thermodynamics

Work through this past-paper style MCQ, then read the full explanation. Practice more physics questions on mMCQ with adaptive practice and topic analytics.

Question

Thermal equilibrium in environment occurs due to:

Options
  • A

    Heat generation

  • B

    Heat dissipation

  • C

    Heat flow

  • D

    Heat absorption

Explanation

Thermal equilibrium occurs due to heat flow, which is the transfer of heat energy from a higher temperature region to a lower temperature region until both reach the same temperature and achieve thermal equilibrium.

Heat generation refers to the production of heat energy, but it does not necessarily lead to thermal equilibrium.

Heat dissipation refers to the process of releasing or dispersing heat into the surrounding environment. While heat dissipation can contribute to achieving thermal equilibrium, it is not the sole cause of it.

This is the correct option.Thermal equilibrium occurs due to heat flow, which is the transfer of heat energy from a higher temperature region to a lower temperature region until both reach the same temperature and achieve thermal equilibrium.

Heat absorption refers to the process of absorbing heat energy from the surroundings. While it is a part of heat transfer, it does not alone ensure thermal equilibrium.

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Tagged under Physics · Heat and Thermodynamics · 2022